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This is the situation when we use Screen resolution less than the maximum screen resolotion supported by the Visual Display Unit (PC Screen - VDU). In case of maximum screen resolotuin the frame buffer memory is fully utilized and only one page is available for display. For such a resolution when it is less than the maximum resolution, more than one page is available, which we often use for animation using page flipping. We keep drawing on to one page which is hidden and flash it altogether when the drawing is complete with the existing one on the screen. This avoids showing of the partially drawn images. For any particular case even 3-4 pages may be available. So the system is termed as "Rotating frame buffer" in Computer Graphics. We keep rotating the pages (full frame buffer parts) to generate animation. A different situation where the frame buffer is literally rotated to generate a rotated display of any image is also sometimes referred to as Rotating frame buffer. Just changing the signs and interchanging the X-Y coordinates may generate such an effect.

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Q: What is Rotating Memory Frame Buffer in computer graphics?
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